The National Center for Missing and Exploited Children just released a new computer generated image.

It shows what the Jane Doe found on July 21, 1999, would have looked like.

She was found in a Raymond cornfield, and detectives said she had died within 24 hours of being found. She had been burned and beaten to death.

"Anytime you cannot identify a victim your back is literally against a wall," Racine County Sheriff Christopher Schmaling said.

The unidentified woman was white, between the ages of 18 and 30, 5-foot-8, 120 pounds with brown hair and brown or hazel eyes. She had poor dental work and possibly two protruding front teeth.

Both of woman's ears were double-pierced. She did not appear to have any scars or tattoos.

The National Centers for Missing and Exploited Children recently decided to use new technology to update the earlier artists rendering.

"We determined with our forensic artist to do another rendering of a composite to try to make it as accurate as possible to how this child would've appeared," said Bob Hoever of the Center for Missing and Exploited Children.

"This is someone's loved one. It's important for us to provide closure to that family. We don't even know who she is at this point," Schmaling said.

Three months after her body was found, thanks to charitable contributions, Jane Doe was given a proper burial in Caledonia. But investigators are hoping after 13 years, a new composite photo will lead to her true identity.

"I'm a mom, and I couldn't imagine anything happening to my child and not knowing where my child was. And there's someone out there that loves her and misses her and that's my goal, to put a name to her," Racine County Sheriff's Office Detective Tracy Hintz said.

The development is also bringing back painful memories for the person who found the body.

"You know, I can still see her in my mind every day. You would think somebody who knew her before her passing away would recognize her," Megan Rios said.

Rios said she was with her father when the pair found the body on the edge of a corn that day.

"It's so vivid and it was like it was yesterday," Rios said. "Her arm was obviously broken and laying behind her in a very unnatural position."

Rios was just a teenager at the time. She said she figured that the girl was dumped out of a car in the middle of the night amidst the rain.

"She was wet, really skinny. You could tell she had a lot of bruising and stuff all over her. And the police had told us that she had probably been like tortured for four weeks before she finally just passed away," Rios said. "It was just kind of sad that after all these years, she's still nobody."

If anyone recognizes the girl, they are asked to contact Racine County Sheriff's Office.

Nearly 40 years after receiving a life sentence for his role in the largest mass abduction in U.S. history, James Schoenfeld -- one of the three infamous Chowchilla school bus kidnappers -- will walk out of a California prison this week a free man.